C # Use of struct and pointer,

C # Use of struct and pointer,

// Struct Definition

[StructLayoutAttribute (LayoutKind. Sequential, CharSet = CharSet. Ansi, Pack = 1)]
Public struct VGAStat
{
Public int length;
[Financialas (UnmanagedType. ByValArray, SizeConst = 6)]
Public int [] number;
}

Public struct VGAStat1
{
Public string str;
Public IntPtr intptr1; // pointer Definition
}

Private void Form1_Load (object sender, EventArgs e)
{

/******** Initialize VGAStat *****************/
VGAStat pp = new VGAStat ();
Pp. length = 123;
Pp. number = new int [6];
For (int I = 0; I <6; I ++)
{
Pp. number [I] = I + 1;
}

/*************************************** ***********/

IntPtr intpt = Marshal. AllocHGlobal (Marshal. SizeOf (pp); // allocate memory to intpt
Marshal. StructureToPtr (pp, intpt, true); Messages data to intpt

 

/******** Initialize VGAStat1 *****************/

VGAStat1 vga = new VGAStat1 ();
Vga. intptr1 = intpt;

/*************************************** ***********/

 

VGAStat entries = (VGAStat) Marshal. PtrToStructure (vga. intptr1, typeof (VGAStat ));

 

*****************/
String Number = string. Empty;

Int ReadLength = entries. length; // ReadLength = 132.
For (int I = 0; I <6; I ++)
{
Number = Number + entries. number [I]. ToString (); // Number = "123456"
}

/*************************************** ***********/